Proposed are an organic-inorganic composite synthetic resin using a highly flame-retardant organically modified nanoparticle, and a production method thereof. The method for producing the organic-inorganic composite synthetic resin using a highly flame-retardant organically modified nanoparticle includes the steps of: adding and stirring metal ion-based phosphinate, melamine cyanurate, and nanoclay to a container containing an aqueous or oily solvent, applying ultrasonic waves and high pressure energy to the stirred solution to prepare a highly flame-retardant organically modified silicate solution through a chemical bonding, and then adding a synthetic resin to form synthetic leather and foam used as life consumer goods to the silicate solution, processing and drying it.

An aqueous polyurethane dispersion includes particles of polyurethane in water, wherein the polyurethane is derived from an organic diisocyanate, a hydrophilic monomer, a neutralizer, a chain extender, and a polyester resin, the polyester resin being a random copolymer having randomly distributed subunits of formula 1: ##STR00001##
where: R is ethylene, octylene, or decylene, a is from about 40 to about 100 mole % of the polyester resin, b is from 0 to about 30 mole % of the polyester resin, c is from 0 to about 30 mole % of the polyester resin, and a+b+c=100 mole % of the polyester resin.

An aqueous polyurethane dispersion includes particles of polyurethane in water, wherein the polyurethane is derived from an organic diisocyanate, a hydrophilic monomer, a neutralizer, a chain extender, and a polyester resin, the polyester resin being a random copolymer having randomly distributed subunits of formula 1: ##STR00001##
where: R is ethylene, octylene, or decylene, a is from about 40 to about 100 mole % of the polyester resin, b is from 0 to about 30 mole % of the polyester resin, c is from 0 to about 30 mole % of the polyester resin, and a+b+c=100 mole % of the polyester resin.

One or more embodiments of the present invention provides a process for the preparation of a coating or layer on a substrate, in which process a mixture comprising one or more polyurethane dispersions, one or more flame retardants, which can be halogen-based or halogen-free, one or more foam stabilizers and optionally one or more crosslinkers is mechanically foamed and then applied on a substrate as a foam, optionally followed by adding flocking fibres, and subsequently dried, wherein the foam has flame retardant properties and remains present as a stable pressure resistant dried foam.

The purpose of the present invention is to provide: a sheet-like article which has a good balance between soft texture and excellent light resistance; and a method for producing this sheet-like article. In order to achieve this purpose, a sheet-like article according to the present invention has the following configuration. Specifically, a sheet-like article which contains a polymer elastic body in a fibrous base material, wherein: the fibrous base material is composed of ultrafine fibers that have an average single fiber diameter of from 0.1 μm to 10 μm; the polymer elastic body has a hydrophilic group, while containing a polyether diol as a constituent; the polymer elastic body internally has an N-acylurea bond and/or an isourea bond; and the condition 1 and the condition 2 described below are satisfied. Condition 1: The bending resistance in the lengthwise direction as determined in accordance with specific standards is from 40 mm to 140 mm. Condition 2: The abrasion weight loss after 20,000 cycles of a Martindale abrasion test set forth in JIS L 1096 (2005) after a light resistance test as performed under the conditions defined in accordance with specific standards is 25 mg or less.

The purpose of the present invention is to provide: a sheet-like article which has a good balance between soft texture and excellent light resistance; and a method for producing this sheet-like article. In order to achieve this purpose, a sheet-like article according to the present invention has the following configuration. Specifically, a sheet-like article which contains a polymer elastic body in a fibrous base material, wherein: the fibrous base material is composed of ultrafine fibers that have an average single fiber diameter of from 0.1 μm to 10 μm; the polymer elastic body has a hydrophilic group, while containing a polyether diol as a constituent; the polymer elastic body internally has an N-acylurea bond and/or an isourea bond; and the condition 1 and the condition 2 described below are satisfied. Condition 1: The bending resistance in the lengthwise direction as determined in accordance with specific standards is from 40 mm to 140 mm. Condition 2: The abrasion weight loss after 20,000 cycles of a Martindale abrasion test set forth in JIS L 1096 (2005) after a light resistance test as performed under the conditions defined in accordance with specific standards is 25 mg or less.

Provided is an artificial leather that has texture (stiffness), a luxuriant feel (dispersibility of fiber bundles), and a slick feel (resin clusters of appropriate size) and can be used suitably as a seat cover material or interior design material for interiors, cars, airplanes, railway cars, etc. and garment accessory products. This artificial leather comprises a fiber sheet and a polyurethane resin and is characterized in that: the fiber sheet comprises at least a fiber layer (A) that forms a first outer surface of the artificial leather; the k-nearest neighbor distance proportion (k=9, radius r=20 μm) between cross-sections of single fibers configuring the fiber layer (A) in a thickness direction cross-section of the artificial leather is 10-80%; the cross-sectional polyurethane resin area ratio in a thickness direction cross-section of the fiber layer (A) is 10-30%; and the standard deviation of the cross-sectional polyurethane resin area ratio in a thickness direction cross-section of the fiber layer (A) is 25% or less.

Provided is an artificial leather that has texture (stiffness), a luxuriant feel (dispersibility of fiber bundles), and a slick feel (resin clusters of appropriate size) and can be used suitably as a seat cover material or interior design material for interiors, cars, airplanes, railway cars, etc. and garment accessory products. This artificial leather comprises a fiber sheet and a polyurethane resin and is characterized in that: the fiber sheet comprises at least a fiber layer (A) that forms a first outer surface of the artificial leather; the k-nearest neighbor distance proportion (k=9, radius r=20 μm) between cross-sections of single fibers configuring the fiber layer (A) in a thickness direction cross-section of the artificial leather is 10-80%; the cross-sectional polyurethane resin area ratio in a thickness direction cross-section of the fiber layer (A) is 10-30%; and the standard deviation of the cross-sectional polyurethane resin area ratio in a thickness direction cross-section of the fiber layer (A) is 25% or less.

The present invention is a synthetic leather including a base fabric (i), an intermediate layer (ii), and a skin layer (iii), in which the intermediate layer (ii) is formed of an aqueous urethane resin composition (C) containing a urethane resin (A) and an aqueous medium (B), the urethane resin (A) is a reaction product of a polyol (a1) containing a polyol (a1-1) having an anionic group and an aromatic polyisocyanate (a2), and has an anionic group in a concentration of 0.35 mmol/g or less, the skin layer (iii) is formed of an aqueous urethane resin composition (Z) containing a urethane resin (X) and an aqueous medium (Y), and the urethane resin (X) is a reaction product obtained by using a polyol (b1), a reactive silicone (b2) having a functional group which reacts with an isocyanate group, and a polyisocyanate (b3) as essential raw materials.

The present invention is a synthetic leather including a base fabric (i), an intermediate layer (ii), and a skin layer (iii), in which the intermediate layer (ii) is formed of an aqueous urethane resin composition (C) containing a urethane resin (A) and an aqueous medium (B), the urethane resin (A) is a reaction product of a polyol (a1) containing a polyol (a1-1) having an anionic group and an aromatic polyisocyanate (a2), and has an anionic group in a concentration of 0.35 mmol/g or less, the skin layer (iii) is formed of an aqueous urethane resin composition (Z) containing a urethane resin (X) and an aqueous medium (Y), and the urethane resin (X) is a reaction product obtained by using a polyol (b1), a reactive silicone (b2) having a functional group which reacts with an isocyanate group, and a polyisocyanate (b3) as essential raw materials.